Authentication bypass via attacker-supplied verification key
Published Mar 6, 2024 · Updated Aug 2, 2024
Improper authentication in Robots & Pencils go-saml allows remote attackers to forge accepted SAML assertions using self-signed tokens. The private verify function in xmlsec.go invokes xmlsec1 without restricting enabled key data, so XML-embedded attacker keys are trusted during validation. Exploitation requires a consuming application to pass SAML responses or requests through Validate or a signature-verification path, granting the identity encoded in the forged assertion.
Summary
What happened
Improper authentication in Robots & Pencils go-saml allows remote attackers to forge accepted SAML assertions using self-signed tokens. The private verify function in xmlsec.go invokes xmlsec1 without restricting enabled key data, so XML-embedded attacker keys are trusted during validation. Exploitation requires a consuming application to pass SAML responses or requests through Validate or a signature-verification path, granting the identity encoded in the forged assertion.
The record
- CVE
- CVE-2023-48703
- Published
- Mar 6, 2024
- Updated
- Aug 2, 2024
- Vendor
- Robots & Pencils
- Product
- go-saml
- Classifications
- CWE-287, T1606.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 6, 2024CVE publishedPublication date reported by the CVE source.
- Aug 2, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=0.0.0-20230606195814-29020529affc
- Affected versionversion=<= 0.0.0-20230606195814-29020529affc
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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